how to rename all file name which contain specific word to another word in a folder using bat or shell script -

how write batch script or shell script rename files in folder

ie ..replace name arun_xyz arun_abc present in file names (replace xyz abc)

and how replace word xyz present inside files word abc

shell:

to rename files:

for fname in *_xyz;    newname=`echo "$fname" | sed 's/_xyz/_abc/g'`    echo "$fname" "$newname" done

after testing replace echo $fname... mv $fname....

to rename tiles , replace files content:

for fname in *_xyz;    newname=`echo "$fname" | sed 's/_xyz/_abc/g'`    sed 's/xyz/abc/g' "$fname" >"$newname" done

TY